WO2004060656A1 - 積層フィルムおよびその製造方法 - Google Patents
積層フィルムおよびその製造方法 Download PDFInfo
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- WO2004060656A1 WO2004060656A1 PCT/JP2003/016702 JP0316702W WO2004060656A1 WO 2004060656 A1 WO2004060656 A1 WO 2004060656A1 JP 0316702 W JP0316702 W JP 0316702W WO 2004060656 A1 WO2004060656 A1 WO 2004060656A1
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Classifications
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- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/036—Multilayers with layers of different types
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/704—Crystalline
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
- B32B2307/736—Shrinkable
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0393—Flexible materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0129—Thermoplastic polymer, e.g. auto-adhesive layer; Shaping of thermoplastic polymer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0141—Liquid crystal polymer [LCP]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
Definitions
- the present invention relates to a laminated film, and includes, for example, various industries such as circuit boards, magnetic recording media, process paper and release materials, plate making and printing materials, optics * display materials, molding materials, building materials, and electrical insulating materials.
- the present invention relates to a laminated film that can be suitably used in material applications. Ming background art book
- Films include magnetic recording media, circuit materials, plate making, printing materials, processes, mold release materials, printing materials, molding materials, various industrial materials such as electrical insulating materials, agricultural products, packaging materials, building materials, etc. It is used in various fields where there is a great demand.
- polyethylene sulfide film Although it has advantages such as excellent heat resistance and small dimensional change due to water absorption, it is a promising material for molded substrates for circuits, but has the problem of a large thermal expansion coefficient. Although a solution to this problem has been disclosed by adding glass fiber or a granular inorganic filler (see Patent Documents 1 and 2), these methods do not always provide a satisfactory effect. However, there were also problems with the flatness and surface smoothness of the film, as well as the cost.
- flooring materials of buildings may require insulation cushioning.
- Polyolefin foam is known as a material with thermal insulation cushioning properties, but it is difficult to make it into a thin film, so its use is limited as it is unsatisfactory as a thermal insulation cushion material to be provided under flooring. Therefore, a thin film having heat insulating cushioning properties was required.
- cushioning properties are also required for printing materials such as printer printing substrates and image forming materials.
- a polyester resin is mixed with a thermoplastic resin or inorganic particles other than polyester and stretched to form voids.
- the provided film is disclosed (see Patent Documents 3, 4, and 5).
- Patent Documents 3, 4, and 5 such a film has a drawback that dimensional stability and flexibility when heated are insufficient.
- thermoplastic resin films used for printed circuit boards, cable insulation, and motor transformer members electrical characteristics corresponding to the high frequency associated with high-speed signal processing are designed to suppress transmission losses. Are required to have a low dielectric constant and a low dielectric loss tangent.
- inverter control that can be precisely controlled for higher efficiency and higher functionality is performed, and the leakage current of high-frequency components in insulating members tends to increase.
- thermoplastic resin film obtained by the above method (a) the distribution of pores becomes non-uniform: the dielectric constant is not stable at the measurement site, and the pore formation by the foaming agent causes In some cases, moldability and heat resistance were impaired.
- thermoplastic resin film obtained by the method (a) has insufficient dispersion control due to the mixing of the immiscible resin, which may cause a distribution of pores and impair the formability. there were.
- thermoplastic resin film obtained by the above method (1) it is necessary to remove at least one component resin in order to form pores, and the process is complicated and practical application is difficult. There was something.
- Patent document 1 Japanese Patent Application Laid-Open No. 5-3100957
- Patent Literature 2 Japanese Patent No. 2952292
- Patent Document 3 u Kokoku 6 9 6 2 8 1 No.
- Patent Literature 4 Japanese Patent Application Laid-Open No. H2-292394
- Patent Document 5 Japanese Patent Laid-Open Publication No. Hei 6—3 2 2 1 5 3
- Patent Document 6 Patent No. 3 1 1 5 2 15
- Patent Document 7 Japanese Patent Application Laid-Open No. Hei 9-2186867
- Patent Document 8 Japanese Patent Application Laid-Open No. 11-92 / 257
- Patent Document 9 Japanese Patent Application Laid-Open Publication No. 2003-64424
- an object of the present invention is to provide a film having excellent thermal dimensional stability, cushioning properties, and low dielectric properties.
- Patent Documents 10 and 11 disclose films in which a liquid crystalline polymer is dispersed in polyester. However, it does not disclose a network structure, cracks or voids as described below.
- Patent Document 10 Japanese Patent Application Laid-Open No. H10-298311
- Patent Document 11 Japanese Patent Application Laid-Open No. H11-115855 ' Disclosure of the invention
- the present invention has the following configurations.
- a laminated film composed of at least two layers of films, at least one layer of which is a thermoplastic resin composition and is biaxially oriented, and at least one other layer has a network structure.
- a laminated film composed of at least two layers of films, at least one layer of which is a thermoplastic resin composition and is biaxially oriented, and at least one other layer has a network structure.
- the content of the liquid crystal polymer with respect to the entire laminated film is 3 to 30% by weight. / 0.
- thermoplastic resin composition of the biaxially oriented film layer is polyester, polyphenylene sulfide, polyetherimide, polycarbonate, polyetherketone, polyethersulfone, polysulfone, or polylactic acid.
- first group of the laminated film of the present invention (Hereinafter, (1) to (14) are referred to as "first group of the laminated film of the present invention.")
- a laminated film composed of at least two layers of films, at least one layer of which is a thermoplastic resin composition and is biaxially oriented, and at least one other layer is non-ductile.
- thermoplastic resin composition of the biaxially oriented film layer is made of polyester, polyphenylene sulfide, polyetherimide, polycarbonate, polyetherketone, polyethersulfone, polysulfone, or polylactic acid.
- the coefficient of thermal expansion in the longitudinal direction and the width direction of the laminated film is both 3 to 45 ppm /.
- second group of the laminated film of the present invention (Hereinafter, (15) to (27) are referred to as "second group of the laminated film of the present invention.")
- a method for producing a laminated film in which a non-ductile resin composition is used for one layer and a layer using the non-ductile resin composition is cracked by biaxial stretching.
- thermoplastic resin composition is used for both outer layers of the layer using the non-ductile resin composition.
- FIG. 1 is a diagram schematically showing a typical network structure seen in a layer of a film having a network structure of the laminated film of the present invention.
- FIG. 2 is a photomicrograph showing a network structure observed in the sublayer of the laminated film obtained in Example 1.
- the laminated film of the present invention is composed of at least two layers, and at least one layer is composed of a thermoplastic resin composition.
- the polymer constituting the thermoplastic resin composition is not particularly limited as long as it can be biaxially stretched.
- Polyamide, Polyamide, Polyimide, Modified Polyphenylene Oxide, Polycarbonate, Polypropylene, Polyethylene, Polyetherketone, Polyketone, Polyethersulfone, Polysulfone, Polylactic Acid, and Copolymers of These Can be.
- a blend containing at least one of these polymers may be used.
- polyester polyphenylene sulfide, polyether imide, polycarbonate, polyether ketone, polyether sulfone, polysulfone, and polylactic acid are particularly preferable.
- Polyester enables continuous production of large-area films that cannot be obtained from other materials, and takes advantage of its strength, durability, transparency, flexibility, and the ability to impart surface properties. It can be applied to various uses.
- polyester a polyester containing an acid component such as an aromatic dicarboxylic acid, an alicyclic dicarboxylic acid or an aliphatic dicarboxylic acid and a diol as main components is preferable.
- aromatic dicarboxylic acid component examples include terephthalic acid, isophthalic acid, phthalic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, and benzophenone dicarboxylic acid, 4, 4 '- Jifue Ninoreji force Norebon acid, 3, 3' Jifueninoreji force Norebon acid, 4, 4 5 - Jifue two Honoré ether dicarboxylic acid, 4, 4, the use of an diphenyl sulfone dicarboxylic acid, etc.
- terephthalic acid phthalic acid
- 2,6-naphthalenedicarboxylic acid are preferred.
- the alicyclic dicarboxylic acid component include hexahydroterephthalic acid, 1,3-adamantanedicarboxylic acid, and cyclohexanedicarboxylic acid.
- the aliphatic dicarboxylic acid component for example, poma ', adipic acid, succinic acid, azelaic acid, suberic acid, sebacic acid, dodecanedioic acid and the like can be used.
- One of these acid components may be used alone, or two or more thereof may be used in combination.
- an oxyacid such as hydroxyxethoxybenzoic acid may be partially copolymerized.
- the diol component include chlorhydroxyquinone, methylhydrazine quinone, 4,4'-dihydroxydiphenyl, 4,4'-dihydroxydiphenylsulfone, 4,4'-dihydroxydiphenylsulfide, 4 , 4 'Dihydroxybenzophenone, aromatic diols such as ⁇ -xylene glycol, ethylenic cornole, 1,2-propanediole, 1,3 propanediole, neopentinolegri cornole, 1,3 —Butandio 1,4, butanediol, 1,5 —Pentangio 1,1,6—Hexane, 1,2—Six mouth Hexane methano, 1,3—Six mouth Hexane dimethanol, 1,4-cyclohexane dimethanol, diethylene glycol, triethylene glycol, polyalkylene glycol
- diol components may be used alone or in combination of two or more.
- Monofunctional compounds such as lauryl alcohol and phenyl isocyanate may be copolymerized in the polyester, or trimellitic acid, pyromellitic acid, glycerol, pentaerythritol, 2,4- A trifunctional compound such as dioxybenzoic acid may be copolymerized within a range where the polymer is substantially linear without excessive branching or crosslinking.
- aromatic hydroxycarboxylic acids such as ⁇ -hydroxybenzoic acid, m-hydroxybenzoic acid, 2, 6-hydroxynaphthoic acid, and p-aminophenol, p— Aminobenzoic acid and the like can be copolymerized in such a small amount that the effect of the present invention is not impaired.
- a polyester selected from the group consisting of polyethylene terephthalate, polyethylene-1,6-naphthalate, and copolymers or modified products thereof. And one type is preferred Indeed.
- 'Such polyethylene terebutarate and polyethylene mono- and 2,6-naphthalate are terephthalic acid or 2,6-naphthalenedicarboxylic acid as an acid component, at least 80 moles. / 0 or more, and a small amount of another dicarboxylic acid component may be copolymerized.
- the diol component a polymer containing at least 80 mol% of ethylene glycol is used, but another diol component may be added as a copolymer component.
- the lower limit of the intrinsic viscosity of the polyester is preferably 0.50 d1 / g or more, from the viewpoints of film forming properties, heat resistance, hydrolyzability, processing stability, dimensional stability, and the like.
- d 1 / g or more is more preferable, and 0.6 d 1 or more is further preferable.
- the upper limit is preferably 2.0 d1 nog or less, more preferably 1.4 dl / g or less, and even more preferably 1.0 d1 Zg or less.
- polyphenylene sulfide 80 moles of phenylene sulfide component. / 0 or more is preferable, and 90 mol. Those containing at least / 0 are more preferable.
- a phenylene sulfide component of 80 mol% or more a PPS with high crystallinity and thermal transition temperature can be obtained, and heat resistance, dimensional stability, mechanical properties, and dielectric properties, which are the special features of PPS. And so on.
- a phenylene sulfide component having such a content can be ensured, a copolymerizable unit containing another sulfide bond may be contained.
- Such units include three functional units such as trihalobenzene, ether units, sulfone units, ketone units, meta-bonding units, aryl units having substituents such as alkyl groups, biphenyl units, terphenylene units, and vinylene units.
- Units, carbonate units and the like can be mentioned. Of these, only one kind may be used, or two or more kinds may be used.
- the mode of copolymerization may be any of a random type or a block type.
- PPS When PPS is used as a component of the resin composition for the purpose of heat-sealing properties, moisture absorption dimensional stability, etc. in addition to the features of PPS described above, a composition containing 60% by weight or more of PPS component is used. Is preferred.
- the content of PPS is 60 weight. By setting the ratio to / 0 or more, the characteristics of PPS can be obtained as a resin composition. If PPS having such a content can be secured, a polymer other than PPS, an inorganic or organic boiler, a lubricant, a coloring agent, and the like may be added.
- the 'main component 3 0 0 ° C, pruning sectional velocity 2 0 0 0 Under sec 1, 5 0 0-5 0 0 0 0 Boys It is preferably, and more preferably, 100 to 2000 voise.
- the layer made of the thermoplastic resin composition is biaxially oriented. By being biaxially oriented, strength that can be used for various applications can be obtained.
- the first group of the laminated film of the present invention is a film in which at least one other layer has a network structure.
- a network structure or a structure having voids With a network structure or a structure having voids, a low dielectric constant and excellent cushioning properties can be obtained.
- the rigidity of the laminated film is reduced, excellent morphological stability can be obtained. Further, thermal expansion can be reduced, and excellent thermal dimensional stability can be obtained.
- This network has a form in which fibril-shaped, rod-shaped, or rosary-shaped linear components are connected in a network in a film layer. Further, for example, a pseudo-mesh shape in which voids are continuous in the longitudinal direction and the width direction in a plane parallel to the film surface may be used. In this mesh structure, the elements constituting the mesh may be curved, or the chain may be partially disconnected as long as the effects of the present invention are not particularly impaired.
- a structure in which a network structure is formed or a structure in which voids are connected is preferable.
- the substance forming the linear component may be the entire non-ductile resin composition described below, or may exhibit non-ductility, such as a liquid crystalline polymer contained in the non-ductile resin composition described later. Some substances may be used.
- the minor axis of the above-mentioned fibril-like, rod-like, or rosary-like linear components observed in a transmission electron micrograph is 5 ⁇ ! ⁇ 100 m is preferred, and more preferably 50 nn! ⁇ 10 / m, more preferably 0. ⁇ ! ⁇
- a bold line indicates a linear component forming a mesh structure
- D indicates a minor axis of the linear component.
- the minor axis may be thin, but is practically 5 nm or more.
- linear components having different diameters may be included, or a plurality of network structures having different sizes may be formed.
- a finer network structure may be formed inside. In these cases, the diameter of the linear component forming the larger mesh structure may be controlled within the above-described preferred range.
- the porosity of the network structure is preferably from 20 to 80%, more preferably from 30 to 70% in terms of the area fraction in the layer surface, from the viewpoint of manifesting various effects of the present invention. And 30 to 60% is more preferable.
- the “at least one other layer” referred to in the laminated film of the present invention is also a film and does not include, for example, a nonwoven fabric.
- the network structure or the void as described above can be obtained, for example, by adopting a non-ductile resin composition in a corresponding layer.
- At least one other layer of the second group of laminated films of the present invention is made of a non-ductile resin composition.
- the non-ductile resin composition referred to in the present invention is a resin composition having an elongation at a temperature of 100 ° C. of 50% or less, which will be described later in “Measurement method” of Examples. That is, the rise of the stress-strain curve in the tensile test is sharp.
- the resin which constitutes at least a part of the non-ductile resin composition and expresses the non-ductility contains a liquid crystal polymer.
- the first group of film layers having a network structure of the laminated film of the present invention contain a liquid crystalline polymer.
- the liquid crystal polymer for example, a copolymer polyester comprising structural units selected from an aromatic oxycarbonyl unit, an aromatic dioxy unit, an aromatic dicarbonyl unit, an alkylene dioxy unit, etc. may be used. it can.
- X represents a hydrogen atom or a chlorine atom.
- the structural unit ( ⁇ ) forms a repeating unit in the polymer with the structural unit (IV)
- the structural unit (m) forms a repeating unit in the polymer with the structural unit (IV). That is, in these copolyesters, the sum of the number of moles of the structural unit ( ⁇ ) and the number of moles of (m) is substantially equal to the number of moles of the structural unit (IV).
- “substantially” means that, if necessary, either the carboxyl terminal group or the hydroxyl terminal group among the polyester terminal groups may be increased, in which case the structural unit (IV)
- the number of moles is a structural unit
- the fraction of moles of the sum of ([pi) is preferably from 5-9 5 mol ./., 3 0-90 mol% and more favorable preferred, more preferably from 50 to 8 0 mol. / 0.
- the fraction of the number of moles of (m) to the sum of the number of moles of the structural units (I), (n), and (m) is preferably from 5 to 95 moles, and preferably from 10 to 70 mole percent. most preferably from 20 to 5 0 mol 0/0.
- the molar ratio of the structural units (I) / ( ⁇ ) is preferably 7 5/2 5-9 5 Roh 5 cell from the viewpoint of fluidity, More preferably, it is 78/2 2 to 93/7.
- It is preferably from 5 to 95 mol%, more preferably from 50 to 80 mol%.
- the copolyester comprising the above structural units (1), ( ⁇ ) and (IV)
- the copolyester comprising the structural units (1), ( ⁇ ), ( ⁇ ) and (IV) and Alternatively, it is preferable to use it after blending with a copolymerized polyester comprising the structural units (i), (m) and (IV).
- the structural unit The fraction of the sum of the moles of (I) and ( ⁇ ) to the sum of the moles of (I), ( ⁇ ) and ( ⁇ ) is preferably 5 to 95 mol%, more preferably 30 to 90%. More preferably, 50 to 80 mol. / 0 is more preferred.
- copolymerized polyester as the liquid crystalline polymer
- other components other than the above structural units (I) to '(IV) may be copolymerized as long as the effects of the present invention are not impaired.
- a copolymer component include aromatic dicarboxylic acids such as 3,3'-diphenyldicarboxylic acid and 2,2'-diphenyldicarboxylic acid, adipic acid, azelaic acid, sebacic acid, and dodecandioic acid.
- Aliphatic dicarboxylic acids such as hexahydroterephthalic acid, chlorohydroquinone, methylhydroquinone, 4,4 'dihydroxydiphenylsulfone, 4,4'-dihydroxyxylphenylsulfuric acid 1,4-butanediol, 1,6-butanediol, 1,6-butanediol, neopentyldiolicol, 1,4-butanediol, 1,4-butanediol, etc.
- Aliphatic, alicyclic diols such as 1,4-cyclohexanedimethanol, m-hydroxybenzoic acid, 2,6-hydroxynaphtho And aromatic Zokuhi mud alkoxy carboxylic acids such as acid, p- Aminofue Nord, can be employed as p- aminobenzoic acid.
- the flow initiation temperature of the liquid crystalline polymer is preferably from 200 to 360 ° C. from the viewpoint of forming a network structure or voids, and from 230 to 320 ° C. with the non-liquid crystalline polyester described later. It is more preferable from the viewpoint of mixing properties.
- polyolefin, polycarbonate, polystyrene, polyetherimide, polyetherketone, and polyether are used as resins that constitute at least a part of the non-ductile resin composition and exhibit non-ductility.
- examples thereof include ether sulfone, poly sulfone, and polylactic acid.
- the non-ductile resin composition preferably further contains a polymer other than the polymer that develops non-ductility.
- the first layer of the film layer having a network structure of the laminated film of the present invention preferably further contains a polymer other than a polymer that develops non-ductility.
- thermoplastic resin composition that forms a layer of a film having a network structure or a layer of a film made of a non-ductile resin composition and an adjacent layer of the film is used. From the viewpoint of adhesion between the film layers and the manifestation of the effects of the present invention, it is preferable that the thermoplastic resin composition is the same as the polymer of the product. Even if a polymer other than the polymer is used, a non-liquid crystalline polyester is preferable.
- the non-liquid crystalline polyester is composed of an acid component such as an aromatic dicarboxylic acid, an alicyclic carboxylic acid, or an aliphatic dicarboxylic acid and a diol component, as described above for the polyester as the thermoplastic resin composition. is there.
- the intrinsic viscosity of the non-liquid crystalline polyester used by mixing with the liquid crystalline polymer from the viewpoint of the stability of the film forming process and the miscibility with the liquid crystalline polymer, 0.55 to 3.0 dl dl g is preferable, More preferably, it is 0.60 to 2.0 Odl / g.
- the lower limit of the content of the liquid crystalline polymer to the layer of the film having a network structure or to the non-ductile resin composition is preferably 20% by weight or more, more preferably 30% by weight or more. 3 5 weight. / 0 or more, even 40 weight. / 0 or more is preferable.
- the upper limit is 90 weight.
- / 0 or less preferably 85% by weight or less, and more preferably 80% by weight. / 0 or less, more preferably 70% by weight or less.
- the content of the liquid crystalline polymer is 20% by weight or more, a network structure or voids can be obtained, and the weight is 90%.
- the content of the liquid crystalline polymer with respect to the entire laminated film is 3 to 30 weight. / 0 is preferred, more preferably 5 to 25% by weight, and even more preferably 7 to 23% by weight. 3% by weight of liquid crystalline polymer based on the entire laminated film.
- / 0 is preferred, more preferably 5 to 25% by weight, and even more preferably 7 to 23% by weight. 3% by weight of liquid crystalline polymer based on the entire laminated film.
- a layer of a film having a network structure or a layer of a film made of a non-ductile resin composition is defined as an A layer
- a layer of a biaxially oriented film made of a thermoplastic resin composition is used as a layer.
- the layer structure such as BZAZB C / B / A / B / C, C / B / A / B, etc.
- a configuration in which a biaxially oriented layer made of a thermoplastic resin is laminated on both outer surfaces of the layer A is preferable.
- a three-layer laminated structure in which the same layer of the same resin is laminated on both outer surfaces of layer A (BZA / B) is particularly preferable in terms of force S, suppression of deformation during film processing, and maintenance of flatness.
- the laminated film of the present invention includes a nucleating agent, a thermal decomposition inhibitor, a heat stabilizer, an antioxidant, an ultraviolet absorber, an antistatic agent, a flame retardant, a pigment, as long as the effects of the present invention are not impaired.
- a dye or the like may be added.
- an organic lubricant such as a fatty acid ester or a wax, a surfactant, a surfactant, or the like is used to impart lubricity, abrasion resistance, and scratch resistance to the surface. It is also preferable to add inorganic particles or organic particles for forming projections. In addition, so-called internal particles may be precipitated by adding a catalyst or the like during the polymerization reaction.
- the inorganic particles include oxides such as silicon oxide, aluminum oxide, titanium oxide, magnesium oxide, and zirconia; composite oxides such as clay, mai, kaolin, talc, and montmorillonite; calcium carbonate; Carbonates such as potassium, sulfates such as calcium sulfate and barium sulfate, titanates such as barium titanate and potassium titanate, and phosphates such as calcium phosphate can be used.
- Silicon oxide includes wet or dry silica-colloidal silica, and may be spherical or porous.
- the organic particles at least a part of the particles constituting the particles may be insoluble in the resin constituting the film.
- polystyrene or crosslinked polystyrene particles, or styrene 'acryl And vinyl-based particles such as acryl-based crosslinked particles, styrene / methacrylic-based crosslinked particles, and particles such as benzoguanamine.formaldehyde, silicon, and polytetrafluoroethylene. Wear. ... '
- the surface roughness of the laminated film can be adjusted by appropriately selecting the particle size, blending amount, shape, etc. of the inorganic or organic particles for forming the surface projections.
- the average particle size is preferably from 0.01 to 3 ⁇ m, and the addition amount is preferably from 0.01 to 3% by weight. Further, one kind of particles may be used alone, or two or more kinds of particles having different average particle diameters may be used in combination.
- the thickness of the laminated film of the present invention is generally preferably 500 / Xm or less, more preferably 0.5 to 400m, and from a viewpoint of thin film use and workability, it is preferably 10 to 30m. 0 m is more preferable, and 20 to 200 m is more preferable.
- the lower limit of the thickness of the layer of the film having a network structure or the thickness of the layer of the film made of the non-ductile resin composition is preferably 1% or more, more preferably 10% or more, and even more preferably 15% or less. The above, more preferably 20% or more, further preferably 30% or more.
- the upper limit is preferably 90% or less, more preferably 80% or less, further preferably 75% or less, further preferably 70% or less, and further preferably 60% or less.
- the content is 1% or more, the effect of improving the thermal dimensional stability can be obtained.
- the content is 10% or more, the cushioning property can be imparted by reducing the specific gravity of the laminated film. Further, by setting the content to 90% or less, it is possible to prevent frequent occurrence of film breakage.
- the second group of laminated films of the present invention has a specific gravity of 0.2 to 1.2.
- the first group of the laminated films of the present invention preferably has a specific gravity within the range. It is more preferably from 0.3 to 1.0, and still more preferably from 0.4 to 0.7, as the laminated film of the present invention. Setting the specific gravity to 1.2 or less means that the voids in the film are sufficient, and the effects of the present invention such as the cushioning property of the film can be obtained. On the other hand, by setting the specific gravity to 0.2 or more, there are not too many voids in the film, and it is possible to balance strength and dimensional stability.
- the laminated film of the present invention has a longitudinal (MD) and a transverse (TD) yan. It is preferable that both of the rub rates are 2 to 7 GPa.
- the lower limit is more preferably 2.5 GPa, and still more preferably 3 GPa.
- the upper limit is more preferably 6 GPa, and further preferably 5 GPa. By setting it to 7 GPa or less, deformation and curl can be suppressed, and form stability can be improved. In addition, by setting it to 2 GPa or more, it is possible to maintain a firm waist and not impair handling.
- the laminated film of the present invention has a heat shrinkage rate of 0 to 2% at a temperature of 150 ° C. in the longitudinal direction (MD) and the width direction (TD), which is determined when the film is processed or used.
- the upper limit is more preferably 2.0% or less, further preferably 1.0% or less, further preferably less than 1.0%, and still more preferably 0.5% or less.
- the content is 2% or less, heat resistance can be maintained and hot dimension stability can be obtained.
- the lower limit is more preferably 0.01% or more. By setting the content to 0.01% or more, it is possible to prevent generation of wrinkles and deterioration of flatness due to expansion of the film.
- the laminated film of the present invention has a thermal expansion coefficient of 3 to 45 ppm in both the longitudinal direction (MD) and the width direction (TD). C is preferred.
- the lower limit is more preferably 4 pm / pC or more, further preferably 5 pp or more, and even more preferably 10 pm / ° C or more.
- the upper limit is more preferably 35 ppm / ° C or less, further preferably 30 ppm / ° C or less, still more preferably 25 ppm / ° C or less, and still more preferably 20 ppm / ° C or less.
- the laminated film of the present invention preferably has a cushion rate of 10 to 50%, more preferably 15 to 45%, and still more preferably 20 to 40%.
- the cushion rate By setting the cushion rate to 10% or more, the flexibility of the film is increased, and the workability when used for building materials such as wallpaper is improved. In addition, cost reduction per area can be expected. Also, by keeping the cushion rate at 50% or less, it is possible to balance the strength and dimensional stability of the laminated film and maintain productivity.
- the laminated film of the present invention preferably has a temperature 3 0 ° C, a dielectric constant at a frequency of 1 0 k H z is from 1.3 to 3.0, more preferably 1.5 to 2.7, it lays more preferred Is from 1.7 to 2.5.
- the dielectric constant is 3.0 or less, when used as an electrical insulating material, power loss due to leakage current and the like and heat generation due thereto can be suppressed, and the effect of the present invention can be obtained. Also, considering that the porosity is appropriately controlled to balance the strength and productivity of the film, it is sufficient to reduce the dielectric constant to about 1.3.
- the laminated film of the present invention may further include, in addition to the above-described configuration, another polymer layer, for example, a layer made of polycarbonate, polyolefin, polyimide, polyvinylidene chloride, or an acrylic polymer. They may be used by being laminated directly or via a layer such as an adhesive.
- another polymer layer for example, a layer made of polycarbonate, polyolefin, polyimide, polyvinylidene chloride, or an acrylic polymer. They may be used by being laminated directly or via a layer such as an adhesive.
- the laminated film of the present invention may be subjected to processing such as heat treatment, molding, surface treatment, lamination, coating, printing, embossing, and etching, depending on the use.
- the laminated film of the present invention can be suitably used for various industrial materials such as process materials, release materials, printing materials, molding materials, building materials, materials for magnetic recording media, circuit materials, and electrical insulating materials.
- the network structure or voids in the laminated film of the present invention can be obtained as follows. That is, the method for producing a laminated film of the present invention is a method for producing a laminated film in which at least two layers of a resin composition are co-extruded, and a thermoplastic resin composition is used for at least one layer. Both are methods for producing a laminated film in which a non-ductile resin composition is used for one layer and a layer using the non-ductile resin composition is cracked by biaxial stretching.
- polyethylene terephthalate as the thermoplastic resin composition and the non-liquid crystalline polyester can be produced by any of the following processes.
- the esterification reaction proceeds without a catalyst
- the transesterification reaction proceeds using a compound such as manganese, calcium, magnesium, zinc, lithium, or titanium as a catalyst.
- a phosphorus compound may be added for the purpose of inactivating the catalyst used in the reaction. Examples of the phosphorus compound include phosphorous acid, phosphoric acid, phosphoric acid triester, phosphonic acid, and phosphonate, and two or more of them may be used in combination.
- the esterification reaction or transesterification reaction is preferably performed at a temperature of 130 to 260 ° C, and the polycondensation reaction is performed at a temperature of 220 to 300 ° C under high vacuum. Is preferred.
- More specific examples of the method for producing polyethylene terephthalate include an esterification reaction of terephthalic acid and ethylene glycol, or a transesterification reaction of dimethyl terephthalate and ethylene glycol to obtain a bis- [3-] Kishechino terephthalate (BHT) can be obtained.
- BHT Kishechino terephthalate
- this BHT is transferred to a polymerization tank, and heated to 280 ° C. under vacuum to advance the polymerization reaction.
- a polyester having an intrinsic viscosity of about 0.5 can be obtained, it is formed into a pellet and pre-crystallized at a temperature of 180 ° C or lower, and then at 190 to 250 ° C.
- a method for containing particles in polyethylene terephthalate a method in which particles are dispersed in ethylene glycol in a slurry form and this ethylene glycol is polymerized with terephthalic acid is preferable.
- a method for adding particles for example, from the state of a water sol / alcohol sol obtained at the time of particle synthesis, once added without drying, the particles have good dispersibility. It is also effective to directly mix the slurry of particles with a predetermined pellet of polyethylene terephthalate and knead it into polyethylene terephthalate using a vented twin-screw extruder.
- a method of adjusting the particle content a master chip of high-concentration particles is prepared by the above method, and is diluted with a chip containing substantially no particles during film formation to reduce the particle content. The method of adjusting is effective.
- thermoplastic resin PPS can be used, for example, by mixing sodium sulfide and p-dichlorobenzene in an amide-based polar solvent such as N-methyl-2-pyrrolidone (NMP). It can be obtained by reacting under high pressure at ° C. At this time, caustic potash, alkali metal carboxylate and the like are preferably added as a polymerization degree regulator. After the polymerization, the polymer is cooled, and the polymer is converted into a water slurry and filtered through a filter to obtain a granular polymer.
- NMP N-methyl-2-pyrrolidone
- This is stirred in an aqueous solution such as acetate at 30 to 100 ° C for 10 to 60 minutes, washed with ion-exchanged water at 30 to 80 ° C several times To obtain a powder.
- This PPS powder is subjected to an oxygen partial pressure of 1.3 MPa (lOTorr) or less, preferably 6 MPa or less.
- the PPS thus obtained is a substantially linear polymer, and the melt crystallization temperature Tmc is in the range of 160 to 190 ° C, enabling stable stretched film formation.
- the above-mentioned copolymerized polyester is, for example, a structural unit ( ⁇ ) of the structural units (I) to (!). When no structural unit is contained, the following method (3) or (4) is preferable, and when a structural unit ( ⁇ ) is included, the following method (5) is preferable.
- p-Hydroxybenzoic acid reacts with 4,4'-dihydroxybiphenyl, aromatic quinone, and other aromatic dihydroxy compounds and acetic anhydride with terephthalic acid and other aromatic dicarboxylic acids Then, the phenolic hydroxyl group is acylated and then produced by a polycondensation reaction of acetic acid.
- Polyester polymers such as polyethylene terephthalate, oligomers Or a method of producing a bis (0-hydroxyxethyl) 'ester of an aromatic dicarboxylic acid such as bis (j3-hydroxyxethyl) terephthalate by the method of the above (1) or (2)'. '
- the polycondensation reaction in the above methods (3) to (5) proceeds without a catalyst, but includes stannous acetate, tetrabutyl titanate, potassium acetate, sodium acetate, antimony trioxide, magnesium metal, etc. In some cases, it is preferable to add a metal compound of the formula (1).
- the structural unit (I) is, for example, p-hydroxybenzoic acid and / or
- the structural unit ( ⁇ ) is, for example, 4,4 'dihydroxybiphenyl, 3, 3', 5, 5'-tetramethyl-1,4 'dihydroxybiphenyl, hydroquinone, t-butyl high.
- the structural unit (m) can be generated from, for example, ethylene glycol.
- Structural units (IV) are, for example, terephthalanoic acid, isophthalic acid, 4,4'-diphenyldicanolevonic acid, 2,6-naphthalenedicarboxylic acid, 1,2_bis (phenoxy) ethane-1,4,4 ' —Dicanolevonic acid, 1,2-bis (2-chlorophenoxy) ethane Can be produced from aromatic dicarboxylic acids such as 1,4′-dicarboxylic acid and 4,4′-diphenyletherdicarboxylic acid.
- the method when the liquid crystalline polymer is mixed with another polymer, the method is as follows: before melt extrusion, the liquid crystalline polymer and the other polymer are preliminarily melt-kneaded ( ⁇ retized) to form a master chip. And a method of mixing and melt-kneading during melt extrusion.
- the method of forming a master chip is preferable because a uniform dispersion state is obtained by :: and because the film quality and the film forming property are good.
- polyethylene terephthalate (PET) is used as the thermoplastic resin
- liquid crystalline polymer "Ueno LCP” manufactured by Ueno Pharmaceutical is used as the liquid crystalline polymer.
- Explanation using the case of using 50 00 as an example Cheating. “Uenoshi CP” 5000 has (I) as the structural unit described above.
- the weight ratio of the liquid crystalline polymer to PET in the master chip is preferably from 95/5 to 50/50.
- each may be separately melted by a melt extruder and then mixed, or a powder material may be previously mixed with a shell mixer, a ball, or the like.
- Dry premixing may be performed by a mixer such as a mixer, a blender or a tumbler, and then the mixture may be melt-kneaded by a melt-kneader.
- melt kneading machine for example, a twin-screw kneading extruder is preferable.
- a liquid crystal polymer pellet and a pellet such as PET are mixed at a desired ratio for use as a master chip and supplied to a vented twin-screw kneading extruder. Melt and knead at C.
- the vented twin-screw extruder is preferably equipped with a twin-screw triple-screw or double-screw double-screw type screw from the viewpoint of reducing dispersion failure, and the residence time at that time is preferably 1 to 5 minutes.
- the master chip thus obtained is further mixed with a chip such as PET so as to correspond to the desired content of the liquid crystalline polymer with respect to the non-ductile resin composition, and vacuum is applied at about 180 ° C for 3 hours or more.
- the compression zone is charged to an extruder heated to a temperature of 270 to 320 ° C.
- the temperature of the compression zone is more preferably set to 290 to 310 ° C.
- filtration for removing foreign substances and degraded polymer in the extruder in order to reduce foreign substances mixed into the film as much as possible.
- a filter used at that time for example, it is preferable to use a sintered metal, a porous ceramic, a sand, a wire mesh, or the like.
- the respective molten polymers that have passed through the extruder are merged by a feed block, laminated, and discharged into a sheet from the slit of the T-die, and the sheet is cooled to a surface temperature of 20 to 70 ° C.
- the unstretched film in a substantially non-oriented state can be obtained by being cooled and solidified by being brought into close contact with a drum (casting roll). Next, the unstretched film is biaxially stretched, the layer using the thermoplastic resin composition is biaxially oriented, and the layer using the non-ductile resin composition is cracked.
- Examples of the stretching method include a sequential biaxial stretching method (a stretching method combining stretching in one direction such as a method of stretching in the width direction after stretching 1 in the longitudinal direction), and a simultaneous biaxial stretching method (longitudinal and width directions). (A method of simultaneously stretching directions) or a method of combining them.
- the stretching conditions and the like may be appropriately set depending on the configuration of the lamination and the components of the resin composition constituting each layer, but generally the following is preferred.
- the stretching ratio is preferably in the range of 1.2 to 6.0 times, more preferably in the range of 1.2 to 6.0, in one step or in two or more steps in each of the longitudinal and width directions of the film. 5 to 4.5 times.
- the stretching temperature is preferably from 90 to 180 ° C. Further, when the glass transition temperature of the thermoplastic resin composition of the layer using the thermoplastic resin composition is T g (° C.) , T g to T g +40 (° C.).
- re-stretching may be performed according to the application and desired film properties.
- the redrawing magnification is preferably 1.1 times or more in the longitudinal direction and the Z or width direction.
- the temperature of the heat treatment after stretching is preferably 150 to Tm (° C) when the melting point of the thermoplastic resin composition of the layer using the thermoplastic resin composition is Tm (° C). More preferably, the heat treatment time after stretching at 200 to 245 ° C. is preferably 0.3 to 30 seconds.
- a relaxation treatment of 1 to 10% in the width direction and / or the longitudinal direction in order to obtain the effect of the present invention, and more preferably. 9% or less.
- the laminated film after winding is subjected to an aging treatment under a temperature condition of 50 to 120 ° C for 5 minutes to 500 hours.
- the layers extend in the longitudinal direction and the width direction in this order.
- the sequential biaxial stretching method for stretching will be described as an example.
- the unstretched polyester film is heated by a group of heating rolls. It is preferable to carry out step stretching, and it is particularly preferable to carry out fine stretching in the longitudinal direction before stretching in the longitudinal direction. This fine stretching removes strains accumulated in and between polymer molecular chains, facilitates subsequent stretching, and forms a network structure or voids in the layer using the non-ductile resin composition. It is effective for.
- the stretching ratio of the fine stretching is preferably from 1.05 to 1.8 times, more preferably from 1.1 to 1.5 times, and still more preferably from 1.15 to 1.3 times.
- the glass transition temperature of the thermoplastic resin composition of the layer using the thermoplastic resin composition is T g (° C.), T g +10 to T g +70 (° C.), more preferably T g +15 to T g +60 (° C.), and still more preferably T g +20 to T g +50 (° C.).
- the stretching ratio in the longitudinal direction is preferably 2 to 5 times, more preferably 2.5 to 4.5 times, and still more preferably 3 to 4 times, including the stretching ratio of the fine stretching described above. It is.
- the stretching ratio does not include the stretching ratio in the re-longitudinal stretching described later.
- a tenter can be preferably used as a stretching method in the width direction (TD direction).
- the film can be stretched in the width direction by gripping both ends of the film with clips and guiding the film to a tenter.
- the stretching ratio is preferably 2.0 to 6.0 times, more preferably 3.0 to 5.0 times, and even more preferably 3.5 to 4.5 times. Note that the stretching ratio does not include the stretching ratio in the re-longitudinal stretching described later.
- the stretching temperature if the glass transition temperature of the thermoplastic resin composition of the layer using the thermoplastic resin composition is T g (° C.), T g to T g +80 (° C.) Preferably, it is in the range of Tg + 10 to Tg + 70 (° C), more preferably Tg + 20 to Tg + 60 (° C).
- re-longitudinal stretching and no or transverse stretching are performed. You can also. ⁇ 'Re-longitudinal stretching can be performed in the longitudinal direction by heating the film with a group of heating rolls.
- T g glass transition temperature
- the stretching ratio is preferably 1.1 to 2.5 times, more preferably The ratio is 1.2 to 2.4 times, and more preferably 1.3 to 2.3 times.
- the stretching temperature is preferably Tg to Tg + 100 (° C), more preferably Tg + 20 to Tg + 80 (° C), and still more preferably Tg + 40 to Tg. + 60 (° C).
- Re-lateral stretching can be performed in the width direction using a tenter.
- the stretching ratio is preferably 1.1 to 2.5 times, more preferably 1.1 to 2.2 times, and even more preferably 1.2 to 2.0 times.
- the stretching temperature if the glass transition temperature of the thermoplastic resin composition of the layer using the thermoplastic resin composition is T g (° C.), T g to 250 (° C.)
- the temperature is preferably Tg + 20 to 240 (C), more preferably Tg + 40 to 220 ° C.
- the film is preferably heat-set under tension or while being relaxed in the width direction.
- the heat setting temperature is preferably from 150 to 250 ° C, more preferably from 170 to 245 ° C, even more preferably from 190 to 240 ° C.
- the time for heat setting is preferably 0.2 to 30 seconds.
- the relaxation rate at this time is preferably 1 to 10%, more preferably 2 to 8%, and still more preferably 3 to 7%, from the viewpoint of reducing the heat shrinkage in the width direction.
- Example 2 the film is cooled to room temperature and wound up to obtain the laminated film of the present invention.
- Example 3 the film is cooled to room temperature and wound up to obtain the laminated film of the present invention.
- the intrinsic viscosity [7] was calculated from the solution viscosity and the solvent viscosity measured at 25 ° C in orthochlorophenol by the following formula. The measurement and calculation were performed for each of the three samples, and the average value was calculated.
- the specific heat was measured by the quasi-isothermal method using the following apparatus and conditions in accordance with JIS K7121.
- Heating temperature 270 to 570 K (RCS cooling method) ''
- Reference container Aluminum open container (18 mg)
- the glass transition temperature (Tg) was calculated by the following equation. With three samples, the measurement and calculation were performed for each, and the average value was calculated.
- T g (extrapolated glass transition onset temperature + extrapolated glass transition end temperature) Z2
- Tm melting temperature
- the resin composition is placed on a polyimide film ("Kabton" manufactured by Toray DuPont) and pressed at a temperature of 300 ° C (400 ° C if the melting point is 300 ° C or more) by a press molding machine.
- a polyimide film (“Kabton” manufactured by Toray DuPont)
- the sheet was compressed at 10 kg / cm 2 for 10 seconds and degassed eight times every 0.2 millisecond to produce a sheet.
- the breaking strength of a sample having a width of 10 mm and a length of 2 Omm of the obtained sheet was measured at a temperature of 100 ° C and a tensile speed of 100 m in accordance with ASTM-D882. With the number of samples 3, those with an average elongation of 50% or less were judged as non-ductile.
- the total light transmittance at the center of the cast film for light with a wavelength of 550 nm was measured using a spectrophotometer U-3410 manufactured by Hitachi, Ltd., and the following function F (t) was 0. It was defined at the time t when it reached 98.
- a sample was cut out to a size of 4 cm x 5 cm, and a hydrometer (SD-120 L, manufactured by Mirage Trading Co., Ltd.) was used. One minute after immersion, the specific gravity was measured. The measured value was converted to a specific gravity of 25 ° C.
- an installation-type tensile tester (Tensilon AMF / RT A-100 ", an automatic film elongation measuring device manufactured by Orientec Co., Ltd.) was used. It measured using. The measurement was performed under the following conditions. With 10 samples, each V was measured and averaged.
- the measurement was performed under the following conditions according to JIS C2318. The measurement was performed for each of the 10 samples, and the average value was obtained.
- Sample size width 10 mm, mark interval 20 O mm
- the 150 ° C. heat shrinkage was determined by the following equation.
- Heat shrinkage (%) [(L 0-L) / L 0] X I 0 0
- thermomechanical measuring device (TMAZ SS610, manufactured by Seiko Instruments Inc.) was used. Apply a load of 3 g to a sample with a sample width of 4 mm and sample length (distance between chucks) of 20 mm, and raise the temperature from room temperature to 170 ° C in 10 minutes at a rate of 10 minutes. Hold for minutes. Thereafter, the temperature was lowered to 40 ° C. at 10 ° C./min and kept for 20 minutes.
- the thermal expansion coefficient ⁇ (1 / ° C) was obtained from the dimensional change from 150 ° C to 50 ° C at the time of temperature decrease by the following equation. The measurement was performed for each of the three samples, and the average value was obtained.
- L 50 Sample length at 50 ° C when temperature is falling
- the film to be measured is attached to the film side of the copper-adhered polyimide film described in JISC 6472 with an adhesive consisting of a general-purpose vinyl chloride resin and a plasticizer, at a temperature of 160 ° C and pressure. 2. Bonding was performed using a roll under the conditions of 9 MPa (30 kg / cm 2 ) and a time of 30 minutes. A sample of 25 cm in the MD direction and 25 cm in the XTD direction was cut out from the obtained pressure-bonded film, placed on a platen, and the curl at the four corners was observed in that state, and the average amount of warpage (mm) at the four corners was measured. Values were determined and evaluated according to the following criteria. ⁇ and O passed. ,
- Warpage is less than 5 mm.
- the amount of warpage is 5 mm or more and less than 1 O mm.
- the amount of warpage is 10 mm or more.
- a sample of the film was cut into a size of 25 cm in the MD direction and 25 cm in the TD direction, placed on a flat table under no load, and processed at a temperature of 160 ° C. for 30 minutes.
- the film was then spread on a cork table and the surface of the film was leveled with a stick wrapped with non-woven fabric to completely eliminate air between the film and the table. After standing for 3 minutes, the state of the film was observed, and the number of portions where the film was lifted off the table was counted.
- the number of floating parts is 5 or less, ⁇ , 6 or more, 10 or less, ⁇ , 11 or more, 15 or less, ⁇ , 16 or more, X .
- the film was incorporated into the motor as a slot liner edge, and the leakage current was measured using a combination of AC900 and VG32 refrigerant and oil, and the following judgment was made.
- Leakage current is less than 0.8 mA.
- a film sample is embedded in epoxy resin, cut in the longitudinal direction and thickness direction of the film, a transmission electron micrograph of the cut surface is taken, and the thickness of a specific layer and the entire laminated film is measured from the photograph, The thickness ratio of a specific layer to the total thickness of the laminated film was calculated.
- a film sample was cut parallel to the film surface, the cut surface of the layer having voids and the like was exposed, and a transmission electron micrograph was taken.
- the image of this photograph was analyzed with an image analyzer software, and the porosity in the layer was measured.
- the linear shape forming the network structure was measured based on 100 sites randomly extracted from the constituent elements, and the average diameter D was obtained from the following equation, which was used as the diameter of the linear element.
- PET Polyethylene terephthalate
- agglomerated silica particles having an average diameter of 2.5 m were added so as to have a content of 2% by weight to form a master chip for adding particles.
- PET chips and particles are 0.1 weight. / 0, and vacuum-dried at 180 ° C for 3 hours, and then supplied to the extruder I whose compression zone was heated to 280 ° C.
- resin composition B the resin compositions obtained in the respective Examples and Comparative Examples are collectively referred to as “resin composition B”, and the layer composed of the resin composition B is generally referred to as “layer B” ′.
- LCP 1 "Ueno LCP” (hereinafter referred to as LCP 1) manufactured by Ueno Pharmaceutical Co., Ltd.
- LCP 1 "Ueno LCP”
- melt extruded at a screw rotation speed of 200 rotations / minute and a residence time of 2 minutes discharged in a strand form, cooled with cold water, cut immediately, and blended.
- the elongation in the determination of non-ductility was 20%.
- the chips of this blended polymer were vacuum-dried at 180 ° C for 3 hours, they were supplied to an extruder ⁇ heated to a compression zone of 280 ° C.
- resin composition A the resin compositions obtained in the respective Examples and Comparative Examples are collectively referred to as “resin composition A”, and the layer composed of the resin composition A is generally referred to as “layer A”.
- the resin compositions A and B melted by the respective extruders were respectively filtered by filters, and three layers of B / AZB were laminated using a rectangular confluence block (feed block) for three layers.
- the speed was adjusted by adjusting the rotation speed of the gear pump installed on the line and controlling the amount of extrusion.
- the molten polymer thus laminated is extruded, and then adhered to a cast drum at a surface temperature of 25 ° C while applying an electrostatic charge to be cooled and solidified.
- the draft ratio (the die slit gap, the unstretched film thickness) (Understretched laminated film).
- This unstretched laminated film was stretched in the longitudinal direction of the film using a longitudinal stretching machine composed of a plurality of heated rolls, utilizing the difference in peripheral speed of the rolls, at a stretching temperature of 100 ° C and a stretching ratio of 3 Stretched at 5 times. Thereafter, both ends of the film were gripped by clips and guided to a tenter, and stretched in the width direction of the film at a stretching temperature of 105 ° C and a stretching ratio of 3.7 times.
- a 3% relaxation treatment in the width direction is performed in a cooling zone controlled at 150 ° C, and then a coating at 100 ° C.
- a 1% relaxation treatment is applied in the width direction, and after cooling to room temperature, the film edge is removed, and the thickness is 50 / im (the thickness of each layer of A layer and B layer is 1 A laminated film with a thickness of 6.7 ⁇ m, that is, the thickness ratio of the layer A was 33%) was prepared.
- the film of this example was free from film breakage during film formation and had good productivity.
- Tables 1 to 3 show the structure and physical properties of the obtained laminated film.
- the laminated film of this example has a network structure of the layer A composed of the resin composition A containing the liquid crystal polymer, has a small coefficient of thermal expansion, a small waist, and is suitable for use as a circuit material.
- the dimensional stability was also excellent. Also, it had excellent low dielectric properties.
- the average diameter of vipril, a linear component forming the network was 3.5 ⁇ m.
- a laminated film was produced in the same manner as in Example 1, except that the thickness ratio of ⁇ / ⁇ at a thickness of 50 ⁇ m of the laminated film was changed to 12.5 / 25 12.5.
- liquid crystalline polyester (referred to as LCP2) having the following composition and a melting point of 256 ° C and a molecular weight of 1800 was used as the liquid crystalline polymer.
- the weight fraction of PET / LCP2 in the resin composition A was changed to 30Z70.
- the elongation in the determination of non-ductility was 15%.
- the mixture was melt-extruded in 90 seconds, discharged in a strand shape, cooled with cold water, and immediately cut to produce a blended polymer chip.
- the elongation in the determination of non-ductility is
- This blended polymer chip was used as a resin composition A and vacuum-dried at 180 ° C. for 3 hours, and then supplied to an extruder whose compression zone was heated to 300 ° C.
- This unstretched film was stretched in the longitudinal direction of the film at a stretching temperature of 105 ° C. and a stretching ratio of 3.1 using the same longitudinal stretching machine as in Example 1. Thereafter, the film was stretched in the width direction of the film at a stretching temperature of 115 ° C. and a stretching ratio of 3.2 times in the same manner as in Example 1 using a tenter.
- a 4% relaxation treatment in the width direction is performed in a cooling zone controlled at 150 ° C, and then a control at 100 ° C.
- a 1% relaxation treatment is applied in the width direction in the rolled cooling zone, and after cooling to room temperature, the film edge is removed and the thickness is 50 ⁇ m (thickness of each layer of A layer and B layer 16 .7 ⁇ , that is, the thickness ratio of the layer was 33%).
- the film of this example was free from film breakage during film formation and had good productivity.
- Tables 1 to 3 show the structure and physical properties of the obtained laminated film.
- the layer A composed of the resin composition A containing the liquid crystalline polymer had a network structure, and the thermal expansion coefficient was lower than that of the single-layer PPS film shown in Comparative Example 2. It was significantly smaller and less stiff, and had characteristics suitable for circuit materials. In addition, they also had low dielectric properties.
- the average fibril diameter of the linear components forming the network is 3 ⁇ m Met.
- a film was produced in the same manner as in Example 1 except that only a resin composition B ′ similar to that used in Example 1 was used and a single PET film having a thickness of 50 / Xm was used.
- a film was produced in the same manner as in Example 4 except that the same resin “composition B” used in Example 4 was used and a 50-m-thick single-layer PPS film was used.
- the weight fraction of PET / LCP1 in the resin composition A was changed to 95-5.
- the elongation for judging inductility was 500%.
- the film was frequently broken, so that stable film formation could not be performed, and the obtained film had no network structure in the A layer and had poor film surface properties.
- Table 1 summarizes the layer configurations of Examples 1 to 4 and Comparative Examples 1 to 4.
- Tables 2 and 3 show the evaluation results of Examples 1 to 4 and Comparative Examples 1 to 4.
- the above-mentioned particle-free PET chip contains 2 weight of aggregated silica particles with an average diameter of 2.5 ⁇ m. / 0 to obtain a master chip for adding particles. Further, the master chip and the above-mentioned chip of non-particle PET are blended so that the particles become 0.1% by weight. After vacuum drying at 0 ° C. for 3 hours, the resin composition B was supplied to an extruder I whose compression zone was heated to 280 ° C.
- Each of the blended polymer chips was vacuum-dried at 180 ° C. for 3 hours, and then supplied as resin composition B to an extruder whose compression zone was heated to 280 ° C.
- the molten polymer laminated in this way is extruded, and adhered to a cast drum at a surface temperature of 25 ° C while applying an electrostatic charge to cool and solidify.
- the draft ratio Die slit slit gap Unstretched film thickness
- the unstretched laminated film was produced by taking at 8).
- This unstretched laminated film is stretched by a roll stretching machine in the longitudinal direction of the film at a stretching temperature of 105 ° C and a stretching ratio of 1.2 times, and then further stretched at a stretching temperature of 85 ° C. Stretching was performed at an elongation ratio of 3.0. Further, the film was stretched in the width direction of the film at a stretching temperature of 100 ° C. and a stretching ratio of 4.0 using a tenter.
- Tables 4 to 6 show the structure and characteristics of the obtained laminated film. This laminated film was excellent in low dielectric properties, cushioning and flexibility, low thermal expansion and flatness.
- a laminated film was produced in the same manner as in Example 5, except that the content of the liquid crystalline polymer LCP1 and the thickness ratio of the A layer to the resin composition A were changed as shown in Table 4.
- Tables 4 to 6 show the structure and characteristics of the obtained laminated film. These laminated films were also excellent in low dielectric properties, cushioning and flexibility, low thermal expansion and flatness. The elongation in the determination of non-ductility was 25% (Example 6), 40% (Example 7), and 5% (Example 8).
- Examples 6 to 8 show a pseudo-mesh structure in which, in the layer A composed of the resin composition A, voids are continuous in the longitudinal direction on a plane parallel to the film surface, or elements constituting the mesh are cut off in the middle. Had. Further, in Example 9, the A layer had a network structure.
- LCP2 was used instead of LCP1 as the liquid crystalline polymer.
- the elongation in the determination of non-ductility was 30%. Otherwise in the same manner as in Example 5, a laminated film was produced.
- Tables 4 to 6 show the structure and characteristics of the obtained laminated film. This laminated film was also excellent in low dielectric properties, cushioning and flexibility, low thermal expansion, and flatness.
- liquid crystal polymer a liquid crystal polyester (referred to as LCP3) having the following composition and a melting point of 220 ° C was used.
- Tables 4 to 6 show the properties of the obtained laminated film. This laminated film was excellent in low dielectric properties, low thermal expansion and flatness.
- Example 4 In the preparation of the resin composition A of Example 4, a liquid crystal polymer ("Siveras" (registered trademark), melting point 315 ° C) manufactured by Toray Industries, Inc. instead of LCP 1 was used as the liquid crystal polymer.
- the heating temperature of the kneading zone of the vented co-rotating twin-screw kneading extruder was set at 325 ° C.
- the elongation in the determination of non-ductility was 15%. Except for these, a laminated film was produced in the same manner as in Example 4.
- Tables 4 to 6 show the properties of the obtained laminated film. This laminated film was excellent in low thermal expansion and dielectric properties. '
- Resin composition B was prepared in the same manner as in Example 5, and supplied to extruder I.
- the resin compositions A and ⁇ ⁇ melted in each extruder were respectively filtered with a filter, and a three-layer laminate was prepared using a three-layer multi-manifold (stacked base).
- the molten polymer thus laminated was extruded and had a surface temperature of 25.
- An uncharged laminated film was prepared by applying a static charge to the C-type cast drum, applying a static charge, cooling and solidifying it, and drawing it at a draft ratio (ratio of die slit gap / unstretched film thickness) of 8. .
- the unstretched film was stretched or the like in the same manner as in Example 5 to produce a laminated film. '
- Tables 4 to 6 show the properties of the obtained laminated film. This laminated film was excellent in low dielectric properties, and was also acceptable in low thermal expansion and flatness.
- a laminated film was produced in the same manner as in Example 5 except that polyetherimide ("Ultem” 1010) (PEI) made by GE Plastics was used instead of the crystalline polymer LCP 1 in Example 5. Obtained.
- Tables 4 to 6 show the characteristics of the obtained laminated film. This laminated film was excellent in low dielectric properties, and was also acceptable in low thermal expansion and flatness.
- a laminated film was produced in the same manner as in Example 5, except that the content of the liquid crystalline polymer LCP1 to the resin composition A and the thickness ratio of the A layer were changed as shown in Table 4. Tables 5 and 6 show the properties of the obtained laminated film. The specific gravity was out of the range of the present invention, and the film was insufficient in low dielectric properties, cushioning property, flexibility, low thermal expansion, and flatness.
- a film was produced in the same manner as in Example 5, except that only a resin composition B similar to that used in Example 5 was used to form a single-layer PET film having a thickness of 50 m. Tables 5 and 6 show the characteristics of the obtained film. The film had insufficient dielectric properties, cushioning properties, flexibility, and low thermal expansion.
- Example 5 a y 0.56 30 1.7 Example 6 with 0.66 21 2.6 Example 7 with 0.72 17 2.8 Example 8 with 1.05 12 2.7 Example 9 with 0.68 23 1.6 Example 1 0 with 0.58 27 2.0 Example 1 1 with 0.70 18 2.7 Example 1 2 Yes 0.72 21 2.0 Example 13 Yes 0.45 35 1.5 Example 1 4 Yes 0.82 15 2.3 Comparative Example 5 None 1.23 7 2.9 Comparative Example 6 None 0.18 55 1.5 Comparative Example 7 None 1.38 5 3.3
- Example 5 Production of a laminated film was attempted in the same manner as in Example 5, except that the same resin compositions A and B as used in Example 5 were used, and the layer configuration was reversed to A / BZA.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03782886A EP1582340A4 (en) | 2003-01-06 | 2003-12-25 | LAMINATED FILM AND PROCESS FOR PRODUCING THE SAME |
US10/540,965 US20060177640A1 (en) | 2003-01-06 | 2003-12-25 | Laminated film and method for producing same |
JP2004564517A JPWO2004060656A1 (ja) | 2003-01-06 | 2003-12-25 | 積層フィルムおよびその製造方法 |
Applications Claiming Priority (4)
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JP2003-220 | 2003-01-06 | ||
JP2003000220 | 2003-01-06 | ||
JP2003148825 | 2003-05-27 | ||
JP2003-148825 | 2003-05-27 |
Publications (1)
Publication Number | Publication Date |
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WO2004060656A1 true WO2004060656A1 (ja) | 2004-07-22 |
Family
ID=32716348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/016702 WO2004060656A1 (ja) | 2003-01-06 | 2003-12-25 | 積層フィルムおよびその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060177640A1 (ja) |
EP (1) | EP1582340A4 (ja) |
JP (1) | JPWO2004060656A1 (ja) |
KR (1) | KR20050088245A (ja) |
WO (1) | WO2004060656A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104086967A (zh) * | 2014-06-27 | 2014-10-08 | 张雨生 | 一种塑料制品材料 |
WO2022113961A1 (ja) * | 2020-11-24 | 2022-06-02 | 富士フイルム株式会社 | 液晶ポリマーフィルム、ポリマーフィルム、及び、積層体 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007188613A (ja) * | 2006-01-16 | 2007-07-26 | Fujifilm Corp | 磁気記録媒体及びその製造方法 |
KR100763616B1 (ko) * | 2007-06-01 | 2007-10-04 | 이석주 | 점착 라벨 |
WO2010096363A2 (en) * | 2009-02-19 | 2010-08-26 | Arkema Inc. | Nanofabrication method |
KR101791215B1 (ko) * | 2010-11-19 | 2017-10-27 | 에스케이씨 주식회사 | 환경친화형 열수축 필름 |
CN103503582B (zh) * | 2011-04-28 | 2017-07-18 | 株式会社钟化 | 补强板一体型挠性印刷基板 |
CN102543433B (zh) * | 2012-01-05 | 2014-06-04 | 安徽国风塑业股份有限公司 | 一种超薄耐候平衡型电容器用双向拉伸聚酯薄膜的制作方法 |
EP2915839A1 (en) * | 2014-03-06 | 2015-09-09 | JSC Veika | Composite sheet and manufacturing method for a foamed decorative sheet free of PVC and plasticizers |
TWI526129B (zh) * | 2014-11-05 | 2016-03-11 | Elite Material Co Ltd | Multilayer printed circuit boards with dimensional stability |
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EP0301624B1 (en) * | 1987-07-23 | 1992-09-30 | Dsm N.V. | Multi-ply films of high impact strength and tear strength, process for their production and their use |
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US6331343B1 (en) * | 1999-05-07 | 2001-12-18 | 3M Innovative Properties Company | Films having a fibrillated surface and method of making |
AU2515200A (en) * | 1999-09-20 | 2001-04-24 | 3M Innovative Properties Company | Optical films having at least one particle-containing layer |
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US6582810B2 (en) * | 2000-12-22 | 2003-06-24 | Kimberly-Clark Worldwide, Inc. | One-step method of producing an elastic, breathable film structure |
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2003
- 2003-12-25 EP EP03782886A patent/EP1582340A4/en not_active Withdrawn
- 2003-12-25 WO PCT/JP2003/016702 patent/WO2004060656A1/ja active Application Filing
- 2003-12-25 JP JP2004564517A patent/JPWO2004060656A1/ja active Pending
- 2003-12-25 KR KR1020057012607A patent/KR20050088245A/ko not_active Application Discontinuation
- 2003-12-25 US US10/540,965 patent/US20060177640A1/en not_active Abandoned
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WO2001016229A1 (en) * | 1999-08-30 | 2001-03-08 | 3M Innovative Properties Company | Capillary collapse resistant microporous material and method |
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CN104086967A (zh) * | 2014-06-27 | 2014-10-08 | 张雨生 | 一种塑料制品材料 |
CN104086967B (zh) * | 2014-06-27 | 2016-06-22 | 张雨生 | 一种塑料制品材料 |
WO2022113961A1 (ja) * | 2020-11-24 | 2022-06-02 | 富士フイルム株式会社 | 液晶ポリマーフィルム、ポリマーフィルム、及び、積層体 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004060656A1 (ja) | 2006-05-11 |
US20060177640A1 (en) | 2006-08-10 |
KR20050088245A (ko) | 2005-09-02 |
EP1582340A4 (en) | 2008-09-03 |
EP1582340A1 (en) | 2005-10-05 |
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